I remember I used to be able to go in before I created a world and change the ore and block spawn rates in a setting tab but I cannot remember how or where I found it at? Could someone help me out? If they know what I'm talking about.

For example, I could change how many pieces of graves spawned in a certain area or how many diamonds spawned in a vein. I just cannot remember where this setting was. It wasn't in the files though, I did it in game.

They removed it in 1.13 and replaced it with buffet worlds, sorry man. If you want to do it anyway you can go back in 1.12 and create a world with customize world options. But if you do this the special ore spawn rate will only be in the area you loaded while in 1.12 and the area you loaded in 1.12 will not have 1.13 world generation.

They removed it in 1.13 and replaced it with buffet worlds, sorry man. If you want to do it anyway you can go back in 1.12 and create a world with customize world options. But if you do this the special ore spawn rate will only be in the area you loaded while in 1.12 and the area you loaded in 1.12 will not have 1.13 world generation.

Is there still a way to change it like in the files? I like to set it to more for SMP's and when I play multiplayer so everyone has a chance to get a good amount of ores.

I don't know much about that but I think you're best bet would be to look for mods.

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Or plugins.

Or you could set aside a special mining area, I think some servers have a separate world for that, or just a region of the normal world that you reset, copy in WorldEdit or something, once a week or so, either just make a copy to save as backup or cut and paste from a pre 1.13 world were you had changed the settings to increase the ore levels. Using the same seed and location would avoid unsightly cliffs or maybe it's possible to leave the surface and just copy everything under sea level?

(You might want to copy a different part of the backup world every time so people don't write down where they found diamonds and rush around mining them all after every reset.)

I don't know that it's really practical but I've been messing around with command blocks replacing everything in the diamond levels except ores with air in order to get statistics about diamond ore positioning.

I have a whole bunch of command blocks, one for ordinary stone, one for diorite, one for lava etc and when I fly around a small area around me in the X and Z directions and between levels 1 and 15 have everything except ores (and the wood and chests and stuff in mineshafts) removed.

An alternative would be to replace, for instance all lapis ore, with diamond ore, all redstone ore with lapis ore, all iron ore with lapis ore, and all andesite (I've never liked andesite much) with iron ore. (You'd probably have to do it one replacement at a time in the right order or the changes would chain and you'd end up with just diamond ore.)

It would take a lot of flying back and forth, probably something one would only want to do for a limited area and before opening the world to the players, it could well add a lot of lag though I'm surprised at how relatively lag free my command blocks are, though that is on a single player world and I'm not doing anything else at the same time.

Plus it could mess up the heights at which one could find the various ores, though one could limit the heights at which the changes took place.

The limit for the fill command is 32,000 blocks or so at a time, for levels 1-15 that's an area of about 30X30 blocks, for 1-60 that would be about 15X15.

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Somebody actually accepted my suggestion for this method once.

As I remember it they were playing with a child without much patience so I told them how to set up a command block to replace something or other with coal ore to make that easier to find.

In case you're interested, if not as a practical solution then at least out of general interest, the basic command for one of my command blocks is:'